Automatic heel-nailing machine.



B. F. MAYO.

AUTOMATIC HEEL NAILING MACHINE.

APPLICATION FILED FEB. 24,1910. I..I.34,279. Patented Apr.6,1915.

3 SHEETS-SHEET 1.

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B. F. MAYO.

AUTOMATIC HEEL NAILING MACHINE.

APPLICATION FILED IER. 24, 1910.

m3845279. Patented Apr. 6, 1915.

3 SHEETS-SHEET 2.

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MTA/5555 @i WWI/rif?. me 34M 5W F. lvl/wo. AUTOMATIC HEEL NAILINGMACHINE.

APPLICATION FILED FEB. 24, I9I0.

Patented Apr.6,1915.

3 SHEETS-SHEET 3.

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unire spans naar orten BENJAMIN E. MAYO, OF SALEM, MASSACHUSETTS,ASSIC-NOR TO UNITED SHOE TEACHINERY COMPANY, OE PATERSON, NEW JERSEY, ACORPORATION OF NEW JERSEY.

AUTOMATIC HEEL-NAILING MACHINE.

Lid-4,279.

Specification of Letters Fatent.

Patented Apr. 6, i915,

T0 all whom t may concern Be it known that I, BENJAMIN F. MAYO, acitizen of the United States, residing at Salem, in the county of Essexand State of Massachusetts, have invented certain Improvements inAutomatic Heel-Nailing Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likereference characters on the drawings indicating like parts in theseveral figures.

rIhis invention relates to heeling machines.

Ileeling machine, such as are now generally used in the manufacture ofboots and shoes, require a heel blank which is to be attached to a bootor shoe, such as a heel or a top lift, to be either placed by hand inattaching position or to be moved into attaching position by a carrier,in which the blank has been before inserted by hand. In such machinosnails are generally brought into inserting position by a movable nailcarrier which is also actuated by hand, said nail carrier being suppliedwith nails at a point removed from the nail-inserting mechanism. T henecessity of manually performing operations such as those mentioneddetracts considerably from the speed of the machine, even if the machineoperator is provided with one or more attendants for performing some ofthem, and it is of course desirable to dispense with attendants as faras possible.

The primary object of the present invention is the provision of amachine which, apart from supplying and removing a boot or shoe to beheeled and starting the machine, will be entirely automatic inperforming the operations incident to attaching a heel. It will beunderstood, however, that features of the invention are capable of ad-`vantageous use in machines wherein some of the operations that areherein performed automatically are performed by hand or by non-automaticmechanism.

The invention will be described with reference to its embodiment in amachine for securing heels and top lifts to boots or shoes. It will beunderstood, however, that the present embodiment is illustrative onlyand that the invention may be embodied in machines of other types. Themachine shown includes provision for placing a heel in attachingposition and mechanism for attaching it to a boot or shoe, saidmechanism comprising means for pressing the heel upon the heel seat andmeans for driving nails through the heel into the heel seat. The machinealso includes nail carrying means for bringing nails into drivingposition. To permit the attachment of a top lift, mechanism is providedfor modifying the operation of the heel pressing means to compensate forthe thickness of the top lift so that said means may be employed tospank the top lift upon the ends of the nails inserted in the heel.Provision is also made for placing a top lift in attaching position. Inthe embodiment of the invention herein shown the parts above referred toare automatically actuated.

In providing a machine capable of performing automatically the severaloperations incident to securing a heel to a boot or shoe and thereaftersecuring a top lift to the attached heel it is a matter of importance toarrange the parts so that they will be actuated at such times that onewill not interfere with another. The several devices for bringing theworking materials such as the heels,

top lifts and attaching nails, into operative relation to the attachingmechanisms must be actuated so that they will not conflict with theattaching mechanisms or with each other. At the same time to secure apractically successful machine due regard should be paid to theselection of suitable mechanisms for actuating the several parts of themachineu For example, the heel attaching mechanism is required to actwith considerable force in pressing the heel upon its seat and ininserting the nails, and its actuating mechanism should be so designedas to furnish by an easy movement of its working parts the powerrequired for these successive operations. Furthermore, it is desirablethat the arrangement be such that the several mechanisms which comprisethe machine will act normally in a predetermined order so that underordinary circumstances all parts of the machine will be brought intooperation at their proper time.

To secure the ends above referred to I employ a plurality of distinctdriving means for operating automatically the several mechanismscomprised in the present machine. The use of this feature simplifies theconstruction of the machine and permits each vmechanism to be actuatedin the manner and by that arrangement of mechanical parts which thenature of said mechanism order or relation and the arrangement ispreferably such that this order is normally insured. The constructiondisclosed is such that a single movable controlling device governs theaction of the two driving means, said controlling device being arrangedso that by successive movements thereof the driving means are broughtinto operation in a predetermined sequence. As shown said controllingdevice, arranged for actuation by the operator, is constructed to bringinto action by a preliminary movement the mechanism for placing a heelin attaching position, and by a further movement to bring theheelattaching means into action. To bring a top lift'into attachingposition another distinct movement of the controlling dev-ice isrequired. By a fourth movement the means for attaching the top lift tothe attached heel is brought into action, thus completing the heelingoperation.

In the drawings,-Figure 1 is a View in side elevation of a `heelattaching machine constituting one embodiment of thepresent invention;Fig. 2 is a view in horizontal section of the machine shown in Fig. 1illustrating mechanism for presenting heels, top lifts and nails to theattaching mechanism; Fig. 3 is a view in plan of the nail block andparts adjacent thereto in the machine shown in Fig. 1; Fig. 4 is a viewin plan of a holder for heels or top lifts; Fig. 5 is a perspective viewillustrating an auxiliary driving shaft and mechanism for controllingthe application of power therefrom; Fig. 6 is a view in front elevationwith parts in `vertical section of a portion of the mechanism shown inFig. 5; Fig. 7 is a view in side elevation of certain elements shown inFig. 6; Fig. 8 is a perspective view illustrating an .element of theclutch mechanism shown in Figs. 5, 6 and 7 and Fig. 9 is a perspectiveview illustrating another element ofsaid clutch mechanism.

Referring to the drawings,l the machine shown in Fig. 1 comprises aframe 10 upon which is journaled a main driving shaft 12. Transmissionof power to said shaft from a driving wheel 13 is controlled by a clutch15 .which may be of ordinary construction and which is indicateddiagrammatically in suitably arrangedv vertical driver passages.Y

A beam 22 is pivotally mounted upon the upper end of the frame and yhasadjustably secured thereto at its front end a slide 24 upon which ispivotally sustained a jack 26. A toggle 28 is mounted at vthe rear ofthe machine and is connected by means of links 30y and 32 with the rearend of the beam 22. The links 30 and 32 are pivotally connected and areheld from flexing by a link 34 pivotally connecting the lower end of thelink 32 with the frame and a linlr'36 pivotally secured to theconnection between linlrs 30V and 32 and also pivotally connected to theupper end of a bell-crank lever 38 pivoted at 40 upon the machine frame.The bellcrank lever 38 is controlled by automatic mechanism to behereinafter referred to.

The toggle 2S is actuated to impart vertical movement tothe jack 26 bymeans ofk a lever 4()a Ipivoted at 42a upon the frame and having uponits lower end a cam roller coperating with a cam upon the cam shaft 14.

A spindle 42 is arranged at the front of the machine for verticalmovement in a guideway formed beneath the nail block 20. 'Ihe spindle 42raises and lowers drivers which operate in the driver passages of thenail block for driving nails through the heel into the heel seat. Saidspindle is vertically reciprocated by a toggle comprising members 44 and46. The lower toggle member 46 is provided with a rearwardly eX- tendingarm connected by means of a link 48 with a lever 50. rIhe lever 50 ispivoted at 51 and is provided at a point between its ends with a camroller engaging a cam fixed upon the cam shaft 14, this cam being soformed that one reciprocation is imparted to the spindle 42 in a singlerotation of said cam shaft.

In the machine herein shown the nail drivers and nails are movedtogether into driving position above the upper end of the spindle 42. Ahorizontal arm 52 having a handle 53 is mounted for pivotal movementabout a stud 54 secured to the frame 10 and said arm 52 sustains a nailcarrier 56. Said nail carrier 56 carries beneath it a driver plate 58which is formed to interlock with the upper end of the spindle 42. Thedriver plate 58 and the drivers secured thereto are arranged formovement relatively to the nail carrier 56 to permit nails to be drivenfrom the driver passages of said nail carrier through the driverpassages of the nail block 20 into the heel. rThe drivers secured to thedriver plate 58 normally project part way into the passages of the nailcarrier 56 and serve to support in said passages nails which aresupplied thereto. Nails are supplied to the carrier from a foot plate 60to which they are automatically supplied from any suitable assortingapparatus. 1t will be understood that nails are delivered to the nailcarrier 56 in the position of the arm 52 shown in Fig. 2 and that saidarm is then moved to bring the nail carrier and the drivers carriedthereby into alinement with the spindle 42.

A heel holder 62 and a top lift holder 64 are mounted above the nailplate 20 for horizontal pivotal movement about the stud A magazine 66for heels is supported upon one side of the nail block from the stud 54and a magazine 68 for top lifts is similarly supported on the oppositeside of the nail block. The top lift holder and heel holder areconnected for movement in unison by means of a link 70. 1t will beunderstood that the holders are moved alternately into position over thenail block and while one holder is in attaching position the other is inposition to receive a blank from its magazine. While the heel holder 62is in attaching position the heels in the magazine 66 are supported by apivoted plate 72 which is held yieldingly in position beneath themagazine 66 and is moved from beneath the same in the movement of theheel holder into receiving position, as indicated in Fig. 2. The toplifts in the magazine 68 are supported while the top lift holder is inattaching position by a wing 74 formed upon the top lift holder. Eachholder comprises a forked rear gage 76 and a breast gage 78. The breastgage of the heel holder is connected to a lever 80 mounted for pivotalmovement on the heel holder and having connected thereto a spring 82 forpressing the breast gage against the heel. The breast gage is moved awayfrom the rear gage in the movement of the heel holder into receivingposition by a stop 84 supported upon the frame of the machine inposition to engage the lever 807 as indicated in Fig. 2.

The breast gage of the top lift holder is held yieldingly toward therear gage by a spring 86 connected to the breast gage by a link 88. Thebreast gage of the top lift holder is moved away from the rear gage inthe movement of the holder into receiving position by a Xed stop 90arranged to be engaged by the spring 86 to limit movement of saidspring, as indicated in Fig. 2. 1t will be seen that in the movement ofthe top lift holder and the heel holder beneath their respectivemagazinesv the breast gage of each holder is moved away from the reargage to permit a top lift or heel to descend into position in theholder. 1n the movement of the holders away from receiving position thebreast gages are moved automatically toward the rear gages to clamp theheel or top lift in position.

The mechanism for automatically operating the heel holder, the top liftholder and the nail carrier will now be described. An auxiliary drivingshaft 96 is ournaled upon the frame 10, it being continually rotated bya belt and pulley connection with a convenient source of power. Belowthe auxiliary driving shaft 96 is a clutch shaft 98 having looselymounted thereon a gear 100 meshing with a gear 102 on the auxiliaryshaft. rlhe gear 100 is clutched to the clutch shaft 98 by a clutchmechanism to be described. The clutch shaft 98 is provided on theright-hand end, viewing Fig. 6, with a disk 104 formed integrallytherewith. The disk 104 has secured thereto a crank pin 106 upon whichis mounted for relative turning movement a slide block 108 received in avertical guideway formed in a slide block 110. The slide block 110 isrigid with a rod 112 sliding in a horizontal. bore formed in the frame10. It will be seen that by the rotation of the clutch shaft 98 areciprocatory movement will be imparted to the slide block 110.

vertical rock-shaft 114 is journaled for oscilla-tory movement on theframe 10. The rock-shaft 114 has secured thereto at its lower end an arm116 connected by a link 118 to the slide block 110. The upper end of therock-shaft 114 has secured thereto two arms 120 and 122. The arm 120 issecured by an adjustable link 124 to the heel holder 62. The arm 122 isconnected by a link 126 to the arm 52 of the nail carrier. It will beseen that with this arrangement in a single reciprocation of the slideblock 110 the heel holder, the top lift holder and the nail carrier willbe reciprocated between receiving position and delivering position.

The mechanism for clutching the gear 100 to the clutch shaft 98 will nowbe described.

rFhe clutch shaft 98 has keyed thereto on l the inner side of the disk104 a collar 128. The gear 100 is provided with a circular recess inwhich one end of the collar 128 lies. The collar 128 is provided with areduced portion 130 having siX inclined surfaces between which and theinside of the gear 100 are arranged cylindrical rollers 132. The rollers132 in their operative positions rigidly lock the gear 100 to the collar128. The rollers 132 are controlled in position by a clutch dog 134. Thedog 134 is mounted for turning movement upon the collar 128 and isprovided with six lateral projections 136 lying between the rollers uponthe interior of the gear 100. rllhe clutch dog 134 is normally impelledto press the rollers 132 into wedging engagement with .the cooperatingsurfaces on the gear 100 and the collar 128 by means of springs 138.Each of the springs 138 is secured at one end at 140 to the clutch dog134 and at the other end to a pin 142 projecting from the collar 128. Itwill be seen from Fig. 7 that the springs 138 tend to turn the clutchdog 134 in a left-handed direction, movement in which direction willcause the rollers 132 to clutch together the gear 100 and the collar128. The clutch mechanism shown is provided with a brake 144 pivoted at146 to the frame 10 and pressed against the exposed edge of the collar128 by means of a spring 148. The brake 144 may be found desirable toarrest promptly the movement of the driven parts after the gear 100 isunclutchel from the shaft 98.

For the purpose of controlling the clutch dog 134, there is provided aswinging arm 150 having at its upper end a lyielding member 152 adaptedto be engaged by shoulders 154 upon the clutch dog and arrest turningmovement of said dog. The arm 150 is held normally in operative relationto .the dog 132 by a spring 156 and is withdrawn from operative positionby a rod 158 adjustably connected with a treadle 160. The rod 158 isprovided with a notch formed to receive a pin 162, angular incross-section, secured to the arm 150. Above and to the rear of the pin162 on the arm 150 is a second pin 164 which, as the arm. 150 is drawnforwardly by the rod 158, moves said rod 158 out of engagement with thepin 162 and thus allows the arm 150 to be drawn rearwardly by the spring156. It will be seen that this construction insures that the clutchshaft 98. will be stopped at the end of a half revolution.

The clutch 15 for the main driving shaft 12 may be of the type of thatdescribed in connection with the auxiliary driving shaft. The clutch 15is controlled by an arm 166 secured to a shaft 168. Rigid with the shaft168 is a lug 17 0 which is arranged to be engaged by a stud 171 on therear end of the treadle 160. An arm 172 is also secured to the shaft 168and in the position of the parts shown in Fig. 1 is held from forwardswinging movement by a locking link 174 connected at its front end formovement with the toggle 44, 46 and at its rear end connected by thelink 173 with the rear end of the treadle 160. This controllingmechanism 'for the clutch 15 may be preferably substantially the same asthe controlling mechanism shown in an application for United StatesLetters Patent filed January is, i902, serial N0. 90,313.

The connections shown between the treadle 160 and the two clutchmechanisms for the main driving shaft andthe auxiliary treadle the rearend thereof comes in contact with this lug and raises the arm 166 torender the clutch 15 effective, the locking link 174 having beenpreviously disengaged by the link 173.

Inasmuch as the mechanism for attaching a heel is used also to spank atop lift on the attached heel, it is necessary to make provision for theadditional thickness ofthe top lift. To compensate for the thickness ofthe top lift the jack is given a different limit of movement in the toplift spanking operation from that which it has in the heel attachingoperation. The mechanism shown for this purpose includes the bell-cranklever 38 above described. This lever is connected by a link 92 with alever 94, the lower end of the link being adjustably secured in a curvedslot formed in said lever. The lever 94 is pivoted for movement about apin 51 and is provided at its forward end with a Cam roll engaged by acam upon the cam shaft 14. This cam is so formed as to impart a singlereciprocation to the link 92 in a single rotation of the cam shaft.

In the operation of the machine shown, a shoe having been placed by theoperator upon the jack 26 and properly adjusted thereon an initialdepression is imparted to the treadle 160. This causes the shaft 98 tobe given half a revolution and through the connections described movesthe heel holder from beneath its magazine into position beneath the shoeand also moves the nail carrier 56 together with the drivers carriedthereby into position beneath the nail block 20, the drivers in suchmovement being clutched to the spindle 42. The shaft 98 stops with theheel in attaching position and the nails and drivers in nail insertingposition. To perform the next step in the cycle of operations of themachine a further depression of the treadle 160 is required. This bringsthe clutch 15 into action and by means of the mechanism described movesthe jack 26 downwardly to press the shoe firmly upon the heel and holdit under pressure. While the heel is thus held under pressure the nailsare inserted Y therethrough into the heel seat by an elevation of thespindle 42 by the mechanism described. As soon as the clutch 15 isplaced in operation, the operator allows the treadle 160 to rise, thuspermitting the clutch controlling arm 166 to descend into position tothrow the clutch 15 out of operation at the end of a single revolutionof the shaft 12. In this single revolution of the shaft 12 the jack islowered and raised, and the spindle 4t2 is raised and lowered. At theend of this operation of attaching a heel, the shoe and heel are in aposition raised from the nail block 20 and the spindle 42 is in itslowermost position. rlhe treadle 160 having been allowed to return toits upper position until the rod 158 is connected with the pin 162 onthe clutch controlling arm 150, the next step in the cycle of operationsof the machine is performed by a second partial depression of thetreadle 160. This causes a second half revolution to be imparted to theshaft 98 and causes the heel holder to be returned to position beneathits magazine, the nail carrier to be moved into position to receivenails from the foot plate 60 and the top lift holder to be moved frombeneath its magazine into operative position beneath the attached heel.rilhis step in the operation of the machine ends with the top lift inposition to be attached by being forced on the ends of the attachingnails which are left exposed for this purpose in the heel atta chingoperation. A further depression of the treadle 160 causes a secondrevolution to be imparted to the main shaft 12. rlhis causes thebell-crank lever 88 to be moved to shorten the effective length of theconnection formed by the links 30 and 32. rlhe jack 26 is then forceddownwardly by the toggle 28 to spank the top lift on the heel, thethickness of the top lift being compensated for, as above described, bythe bell-crank lever 38. The cycle of operations of the machine closeswith the jack in its raised position whereupon the shoe is removed fromthe machine. l

lt will be observed that while the mechanisms for presenting heels, toplifts, and nails respectively to the attaching mechanism areautomatically operated they are under the control of the operatorseparately from the attaching mechanism. This permits an operator tomake sure that the presenting mechanisms have performed their functionsproperly before he brings the attaching mechanism into operation. ltwill be seen that the use of a single controlling device is notnecessary to secure the separate control referred to, as the presentingmechanisms and the attaching mechanism could be controlled by separatedevices and it would be within the present invention to make thismodification, as well as other modifications which will be apparent tothose skilled in the art. The use of a single controlling device,however, may be found desirable as increasing the speed of operation ofthe machine. lt will also be seen that its use insures that in itsnormal operation the presenting mechanisms and the attaching mechanismwill be successively brought into action in a certain order.

Having described my invention what I claim as new and desire to secureby Letters Patent of the United States is l. A heeling machine having,in combination, mechanism for automatically attaching a heel to a shoe,driving means for operating said mechanism, a magazine for holdingheels, mechanism for automatically taking a heel from said magazine andpresenting it to said attaching mechanism, and driving means for saidpresenting mechanism arranged to be brought into action by the operatorseparately from said first named driving means.

2. A heeling machine having, in combination, mechanism for automaticallyattaching a heel to a shoe, driving means for voperating said mechanism,mechanism for automatically presenting a heel to said attachingmechanism, driving means for said presenting mechanism, arranged to bebrought into action by the opera-tor separately from said first nameddriving means, and a single successively operative controlling devicefor said two driving means.

3. In a heeling machine, the combination of a horizontally stationarynail block, mechanism for automatically presenting a heel to said nailblock,y automatic mechanism for attaching a heel to a shoe, separatedriving means for said two automatic mechanisms, and a commoncontrolling means for said two separate driving means constructed andarranged to effect operation of the driving means for the presentingmechanism and then permit a dwell or rest in the action of said twodriving means between the operation of the presenting mechanism and theoperation of the attaching mechanism.

l. In a heel attaching machine, the combina-tion of a shoe support, aheel holder, automatic means for effecting relative movement of saidsupport and holder to locate the shoe and heel in proper relation toeach other, automatic mechanism for attaching the heel to the shoe, anda single controlling device arranged to set said automatic means inoperation during the initial portion of its movement and to set saidautomatic mechanism separately in operation at the will of the operatorupon further movement of the controlling device.

5. A heeling machine having, in combination, mechanism for automaticallyinserting heel attaching nails, mechanism for thereafter automaticallymodifying the action of said inserting mechanism to permit a top lift tobe spanked on the ends of the attaching nails, driving means foroperating said mechanisms, mechanism for automatically presenting a heelto said inserting mechanism, mechanism for automatically presentingnails to said inserting mechanism, mechnism for automatically presentinga top lift to said inserting mechanism, and driving mea-ns for saidpresenting mechanisms separate from said first named driving means.

6. In a machine of the class described, the combination with a shoesupport and mechanism for automatically attaching a heel to a shoe uponsaid support, of independently operable automatic mechanism forpresenting a heel and attaching nails to said attaching mechanism.

7. In a heel attaching machine, the combination of heel attachingmechanism, heel presenting mechanism, power operated means for drivingsaid attaching mechanism, power operated means for driving saidpresenting mechanism, and a unitary means for starting operation of saidtwo' driving means separately, at the will of the opertor, inpredetermined'order.

8. In a heeling machine, the' combination of heel attaching mechanism',heel presenting mechanism, nail presenting mechanism for presentingnailsto the nail block, and means for' automatically and'` simultaneouslyactuating said presenting mechanisms.

9. In a heeling machine, the combination of heel `attaching mechanism, anail block, heel presentingmechanismfnail presenting mechanism forvpresenting nails to the lnail block, means for automatically andsimultaneously actuating said i presenting mechanisms, and yseparatelylcontrollable means for thereafter actuating said attaching mechanism.

10. In a heeling machine, the combination of a nail block, an opposedWork support, means forgiving said'nailV block and work support amovement of approach and separation, nail presenting means movable fromnaily receiving to nail delivering position with respect to the nailblock, a'heel holding magazine, heel-presenting means movable from themagazine to heel presenting position with respect to the nail block,driving means for said two presenting means, and a unitary device forstarting the action of said driving means to present nails and a heel tothe heel block and then permit the parts to come to rest, and by furthersubsequent operation to start the relative movement of the work supportand nail block.

11. In a heeling machine, the combination of a nail block, an opposedwork support, means for relatively moving the work support and nailblock, heel presenting mechanism, nail presenting mechanism, anauxiliary shaft, means for operating it independentl of said first namedmeans, connections between the auxiliary shaft and said presentingmechanisms, and a unitary device for causing the auxiliary shaft tooperate the presenting mechanisms, and thereafter to operate said firstnamed means.

12. In a heeling machine, the combination of a nail block and opposedwork support, means'for relatively moving them in a direction'ofapproach and separation, heel presenting and nail presenting mechanisms,an auxiliary shaft for operating said two mechanisms, means forindependently operating said shaft,1 aV treadle, and connections betweenthe treadle and auxiliary shaft and between the treadle and said firstnamed means constructed and arranged to cause the operation' of theauxiliary shaft upon partialmovement of the treadle and operation ofsaid first named means upon further depression thereof.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BENJAMIN F. MAYO.

I/Vitnesses z HERBERT W. KENWAY, JAMEs R. HODDER.

Copies'ot this patent may be obtained vfor piire cents each, byaddressing the Commissioner of Patents,

i "Wa`Shin'gton,D.C.

